<template>
  <header class="header">
    <!-- 头部的第一行 -->
    <div class="top">
      <div class="container">
        <div class="loginList">
          <p>尚品汇欢迎您！</p>

          <p v-if="!userName">
            <span>请</span>
            <!-- 声明式导航：务必带to属性 -->
            <router-link to="/login">登录</router-link>
            <router-link to="/register" class="register">免费注册</router-link>
          </p>
          <p v-else>
            <a>欢迎您，用户 {{userName}}</a>
            <a class="register" @click="unLogin">退出登录</a>
          </p>
        </div>
        <div class="typeList">
          <a href="###">我的订单</a>
          <a href="###">我的购物车</a>
          <a href="###">我的尚品汇</a>
          <a href="###">尚品汇会员</a>
          <a href="###">企业采购</a>
          <a href="###">关注尚品汇</a>
          <a href="###">合作招商</a>
          <a href="###">商家后台</a>
        </div>
      </div>
    </div>
    <!--头部第二行 搜索区域-->
    <div class="bottom">
      <h1 class="logoArea">
        <!-- target是打开一个新的网页 -->
        <router-link class="logo"  to="/home" >
          <img src="./images/logo.png" alt="" />
        </router-link>
      </h1>
      <div class="searchArea">
        <form action="###" class="searchForm">
          <input
            type="text"
            id="autocomplete"
            class="input-error input-xxlarge"
            v-model="keyword"
          />
          <button class="sui-btn btn-xlarge btn-danger" 
          type="button"
          @click="goSearch"
          >
          <!-- 编程式导航 -->
            搜索
          </button>
        </form>
      </div>
    </div>
  </header>
</template>

<script>
export default {
    name:"Header",
    data(){
      return{
        keyword:''
      }
    },
    methods:{
      // 搜索按钮的回调函数：需要向search路由进行跳转
    goSearch(){
      // 路由传参
      // 字符串传参
        // param传参
      // this.$router.push("/search/"+this.keyword)

        // query传参
      // this.$router.push("/search/"+"?k="+this.keyword)
      
      
      // 第二种:模板字符串
      // this.$router.push(`/search/${this.keyword}?k=${this.keyword.toUpperCase()}`)

      // 第三种：对象写法
      // 往$router身上放东西
     if(this.$route.query){
        this.$router.push({
        // 往哪跳
        name:'search',
        // path:"/search/:keyword",
        params:{keyword:this.keyword || undefined},
        query:this.$route.query
        // query:{k:this.keyword.toUpperCase()}
      })
     }
    },
      // 退出登录
    async unLogin(){
      // 发请求通知服务器 清除一token
      
      // localStorage.clear('TOKEN')
      this.$store.dispatch("reqLogout")
      // 如果成功跳回首页
      try{
        await this.$store.dispatch("reqlogout")
        this.$router.push('/home')
      }catch(error){
        alert(error)
      }
    }
    },
    mounted() {
      // 清除关键字
      this.$bus.$on('clear',()=>{
        this.keyword = "";
      })
    },
    computed:{
      userName(){
        return this.$store.state.user.userInfo.name 
      }
    }
};
</script>

<style scoped lang="less">
.header {
        &>.top {
            background-color: #eaeaea;
            height: 30px;
            line-height: 30px;

            .container {
                width: 1200px;
                margin: 0 auto;
                overflow: hidden;

                .loginList {
                    float: left;

                    p {
                        float: left;
                        margin-right: 10px;

                        .register {
                            border-left: 1px solid #b3aeae;
                            padding: 0 5px;
                            margin-left: 5px;
                        }
                    }
                }

                .typeList {
                    float: right;

                    a {
                        padding: 0 10px;

                        &+a {
                            border-left: 1px solid #b3aeae;
                        }
                    }

                }

            }
        }

        &>.bottom {
            width: 1200px;
            margin: 0 auto;
            overflow: hidden;

            .logoArea {
                float: left;

                .logo {
                    img {
                        width: 175px;
                        margin: 25px 45px;
                    }
                }
            }

            .searchArea {
                float: right;
                margin-top: 35px;

                .searchForm {
                    overflow: hidden;

                    input {
                        box-sizing: border-box;
                        width: 490px;
                        height: 32px;
                        padding: 0px 4px;
                        border: 2px solid #ea4a36;
                        float: left;

                        &:focus {
                            outline: none;
                        }
                    }

                    button {
                        height: 32px;
                        width: 68px;
                        background-color: #ea4a36;
                        border: none;
                        color: #fff;
                        float: left;
                        cursor: pointer;

                        &:focus {
                            outline: none;
                        }
                    }
                }
            }
        }
    }
</style>